Relay assembling and adjusting fixture



A. M. MacPHEAT RELAY AssEMBLING AND ADJUSTING FIXTURE Fild July 7, 195oAug. 3, 1954 4 Sheets-Sheet l /V Vf/V 7.01? .MM/4c P//fAr A fra/Mfr Aug3, 1954 A. M. MaCPHEAT RELAY ASSEMBLING ANDADJUSTING FIXTURE 4Sheets-Sheet 2 Filed July 7, 1950 Aug 3, 1954 A. M. MaGPHEAT RELAYASSEMBLING AND ADJUSTING FIXTURE 4 Sheets-Sheet 3 Filed July '7, 1950WVM/raf? A. M MAC/H017 A11g 3, 1954 A. M. MaCPHEAT RELAY AssEMBLING ANDADJUSTING FIXTURE 4 Sheets-Sheet 4 Filed July '7, 1950 .ww lf r m6 mm.i. MM MV d IWW. N\ Nw v @l @.lN/RIGA NM ,In Q.\ vs/MMX .mf WQ wm..\.\ i,1 r Jl WR., nwwm.

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Patented Aug. 3, 1954 RELAY ASSEMBLIN G AND ADJUSTING FIXTURE AlexanderM. MacPheat, Indianapolis, Ind.. as- Electric Company, Incorsignor toWestern porated, New York, York Application July 7,

6 Claims.

This invention relates t assembling and adjusting fixtures and moreparticularly to a fixture for assembling and adjusting parts of relays.

The subject constituting the subject matter of the present invention isparticularly applicable to the assembling and adjusting of parts ofrelays for use in telephone coin collector mechanisms which may includea pivotal armature actuated lever, pivotal spring returned restoringlevers for said armature actuated lever and an associated armaturecarried upon a saddle member pivoted intermediate its ends on a framewhich is fixed relative to a pair of coils having their cores fixed to abase plate, the lever, restoring levers and saddle member being pivotedabout a common axis on the frame by front and rear pivot screws. In thistype of relay, it is very between and that the pivotal saddle member towhich the armature is iixed should have a slight play between its pivotscrews within prescribed limits to insure that the relay will have thedesired operating characteristics.

An object of this invention is the provision of a iixture for accuratelyand expeditiously assembling and adjusting parts of relays.

In accordance with the above object, the invention comprises a fixturewhich includes .pivotal wedged-faced locating means movable intocooperative relationshipI with the sloping side faces of the coil coresfor longitudinally shifting and centering the relay sub-assemblagecomprising the base plate with the coils and their cores and frame xedthereto to a definite position on the fixture, means for locking thelocating means in its operated position, and clamping means for holdingthe thus positioned relay sub-assemblage during subsequent assemblingoperations. After the sub-assemblage is clamped to the xture, thewedge-faced locating ymeans is returned to its inoperative position.Thereafter, the relay parts to be assembled on the sub-assemblage;namely, the saddle member with the armature thereon, armature actuatedlever and restoring levers, are assembled and pivoted on the frame bytheir pivot screws, which are screw-threaded into the frame. This isfollowed by tightening the pivot screws to eliminate any play of thesaddle member and armature on the screws and to hold the armatureassemblage in a substantially horizontal plane. At this time, thearmature is xed to the saddle member by a .pair of screws passingthrough slo As in the saddle member and threaded N. Y., a corporation ofNew 1950, Serial No. 172,502

into .the armature. These screws are then loosened so that the armaturemay later be `longitudinally adjusted slightly relative to `the saddlemember. A lever is now actuated and, through essential that the armatureAand its saddle member have a slight playon their pivot screws. Toadjust the pivot screws -for such play, a pivotally mounted ldialindicator is first swung into operative position to carry its actuatorinto contact with one end of a vertical edge :face of the armature andis clamped in such position. The yrear pivot screw, previouslytightened, is now loosened and adjusted so that the armature and itssaddle will have a slight play lon its .pivots within prescribed limits,which is indicated on by rocking the armature in a horizontal plane. Thefront pivot `screw is now locked by means of a lock nut carried thereonandthe assemblage of the referred-.to relay parts on the relaysub-assemblage is complete.

Other objects and advantages or' the invention will be apparent from thefollowing detailed description taken in conjunction lwith `thevaccompanying drawings, in which Fig. 1 is a fragmentary plan view of afixture embodying the features ,of this invention, the operating partsof the xture being shown in their normal or retracted position;

Fig. 2 is a .plan View, similar to that of Fig. 1, partly in section;vand showingcertain operating parts in operated .positions with a relaysub- Aassenfiblage definitely located and clamped on the xture;

Fig. `3 is a fragmentary vertical irregular section on a slightlyenlarged scale, Ataken lon the lineS-S-of Fig. 2;

Fig. 4 Vis a vertical sectional view of a portion of Fig. 3 showing thearmature vcentralizing fingers in Vtheir operated Vpositions Vwiththe-'armature end faces located relative tothe relaycore assenze sidefaces to provide definite and similar air gaps therebetween;

Fig. is a Vertical sectional view taken on the line 5-5 of Fig. 2, on aslightly enlarged scale similar to that of Figs. 3 and 4, and

Fig. 6 is a plan view of a relay after the assembling and adjustingoperations have been completed on the fixture.

Referring now to the drawings, particularly to Figs. 3 and 6, there isshown a relay, indicated in general at l0, comprising a base plate Il ofmagnetic material having its opposite ends notched at i2-l2, the notchesbeing used in mounting the relay on the coin collector mechanism withwhich it is used. The base plate li supports a pair of coils |1-l1having magnetic material cores which terminate in pole pieces 2l--2Ihaving sloping side faces 23--23 at their upper ends upon opposed innerfaces, which in cooperation with sloping end faces 2li- 2li (Figs. 4 and6) of a pivotal armature 25 leave but a small air-gap between suchsloping faces when the pivotal armature is operated to take a positionadjacent either of the pole piece faces. The

armature structure comprises the armature propn er attached by screws26-26 to a channel shaped supporting member 21. Slots 28--28, extendinglongitudinally in the member 21 through which the screws 26--26 extend,provide means whereby the armature adjusted slightly relative to themember 21. The member 21 carrying the armature 25 is pivotedintermediate its ends by front and rear pivot screws 3l) and 3|,respectively, on a frame 32 of non-magnetic materials, which isfrictionally supported on the pole pieces 2 l-ZI and also secured byscrews 33 thereto, the frame surrounding a central magnet 35 xed to thebase plate l i. Also pivoted on the pins and 3i is an armature actuatedlever having an offset lower slotted end 31, which in use is connectedto a movable element of an associated coin directing vane (not shown) ofthe coin controlled apparatus which includes the relay I0.

The lever 36 includes a top portion 58 which extends over the armatureassembly in spaced relation, and is slotted at 39 to provide access tothe screws 2li- 26. Upon the front side of the lever 35 (Fig. 6) is anapertured depending lug 42, its aperture being aligned with an aperturef in the downwardly extending portion of the lever 35 at the rear of therelay, the two apertures receiving the front and rear pivot screws 35and 3 respectively, upon which the lever is pivoted, the screw 30 beingequipped with a lock nut 53. Also pivoted on the screws 30 and 3| aretwo independent armature restoring levers -135 extending toward oppositeends of the armature, and each has a central depending arm l5 whichnormally is spring pulled against the upper end face of the adjacentpole piece 2l by coiled tension springs (not shown).

The fixture to be presently described serves to first accuratelylongitudinally center and then clamp the relay sub-assemblage on thefixture and after relay parts to be assembled on the subassemblage areassembled and pivotally mounted thereon to shift the armature 25longitudinally on its channel-shaped supporting member 21 to accuratelyassociate its sloping end faces 2li-24 with the sloping side faces 23-23of the pole pieces 2 I--2I to provide the desired air gaps therebetweenand also to facilitate the providing of the armature assemblage with thedesired slight play between its pivot screws 30 and 3l.

25 may be longitudinally 5| having two spaced left and 53, respectively,

The fixture comprises a base irregularly shaped aligned and right handstandards 52 and (Figs. 1 and 3) nxed to its upper surface. Mounted forreciprocation in slideways 54-54 provided in the upper surfaces of thestandards 52 and 53 in longitudinal alignment with the relay armature 25are left and right hand armature adjusting ngers 55 and 55. The fingers55 and 56 are forked shaped on their inner opposed ends (Figs. l, 3 and4) with the end faces of the furcations inclined as indicated at 59--59to substantially the slope of the armature end faces 2&5-24 with whichthe fingers engage in the operation of centralizing the armature withrespect to the sloping side faces 23--23 of the pole pieces 2 I-2 i.Forked ends are provided on the fingers 55 and 56 for the purpose ofpermitting the inclined faces 59-59 to engage the faces 24--24 of thearmature 25 at either side of armature restoring lever arms i6- 46.Formed transversely in the upper surfaces of the fingers 55 and 56 aresimilar but reversely directed cam slots 50, in which are fitted lowerends (Figs. l and 2) of correspondingly shaped reversely directed camarms 6| of an *ri-shaped reciprooatory cam member 52 having aninterconnecting cross arm 63 adjacent its upper end. For supporting andguiding the member 52 in its reciprocatory movements two irregularlyshaped aligned and spaced left and right hand standards 66 and 61,respectively, are carried on the base 5I at its upper end (Figs. l and2) which are provided in their upper surfaces with suitably Shaped andarranged guideways S8 for receiving opposite parallel arm portions ofthe member 52. The cam arms 5i terminate in parallel portions which aresupported and guided in guideways 69 formed in the upper surfaces of thestandards 52 and 53. Cover plates 12 and 13 fixed to the upper surfacesof the standards 52, 53, 68 and 51 serve to retain the reciprooatoryarmature centralizing fingers 55 and 55 and the H-shaped reciprooatorycam member B2 which actuates the 'fingers in their guideways. Advanceand retractive movements of the member 62 serve to simultaneouslyadvance the fingers 55 and 55 equal distanc toward each other and thenretract them, respectively, the movements of the fingers beingperpendicular to the movements of the member 62.

For actuating the H-shaped member 62, a hand lever 14 is pivoted at itsleft end (Figs. l and 2) as indicated at 15 to a lug 16 welded to theleft hand vertical surface of the standard 6B (Figs. 1 and 3), the leverbeing pivoted by a pin and slot connection 19 to the crossarm 63 of theH- shaped member 62 at a point intermediate its parallel arms. To theright end of the lever 14 is attached by means of a pin 8i, a handle 82,the pin being fixed at one end to the handle and its opposite end isscrewthreaded at 83 and freely threadable into an aperture 86 in thelever 14. Attached to the right hand vertical surface of the standard 61is an arcuately shaped vertical support 81 for the end of the levercarrying the handle 82. An unthreaded portion 88 of the pin 8i rides ina slot 69 in the support S1, which support is tapered in thickness fromits upper end to its lower end as viewed in Figs. 1 and 2. In operationupon the lever 14 being moved from its normal full line position to itsadvanced dotted outline position Fig. 2, during which operation theH-shaped cam member 52 is advanced, which in turn simultaneouslyadvances the armature centralizing fingers 55 and 56 equal distancestoward each other, the handle 32 is rotated to thread the pin 8| furtherinto the lever '14, thus clamping the left end face of the handleagainst the arcuate and tapered support 8l at its thin end. Thus, therewill be no tendency for the in the direction of its advance movement,thereby insuring that the lingers 55 and 55 will remain in theiradvanced operative positions, as shown in the drawings.

Spanning and intermediate the standards te and l and secured to lowersurfaces thereof, is a plate 90 having upon its upper surface adjacentits lower end Figs. l and 2 two pair of apertured spaced lugs or ears93-Q3 and 94-913. Pivoted to the lugs S33-Q3, as indicated at 95 95, isan irregularly shaped yoke member 9S having lower ends of itsfurcations, Figs. 1 and 2, directed inwardly in alignment with eachother and then downwardly (Figs. 3 and 5) and shaped to provide twodepending lugs Sli-9i. The lugs 9-9l are recessed as indicated at S8-93to clear the screws 33. Outer opposed faces @-99 of the lugs Sli-Jl areinclined to substantially the slope of the side faces 23-23 of thearmature pole pieces 2l-2l and are similarly spaced. When the yokemember 95 is swung from its inoperative position, Figs. 1 and 5 to itsoperative position, Figs. 2 and l5, the inclined or wedge faces Bil-99will wedgingly engage the sloping faces 23-23 of the core pieces 2|2I.Pivoted at |00 upon and between the arms of the yoke member 9S is a camlever di which is forked at It? (Fig. 5).

Supported in and extending between the apertured lugs lit- 9d on theplate 9B is a fixed pin engaged by an inclined surface Ill on the forkedend |92 of the cam lever IBI when the lever is `swung from itsinoperative position, Fig. 1, to its operative position, Fig. 5. Thisproduces a cooperating camming action of the pin |93 and surface Iillwhich serves to draw down. the yoke member S5 to force its wedge faces.t9-#t9 along the sloping faces 23-23 of the relay pole pieces 2 I-2I,`and thus shifting the relay sub-assemblage longitudinally in onedirection or the other to centrally locate it upon the assemblingfixture. rThe cam lever IBI will 1' main in its opera-ted position untilreleased.

For clamping the sub-assemblage of the relay id to the iixture, thefixture base 5I carries a pair of aligned and spaced plates itil- I Ellfrom the upper surfaces of which extend relay locating pins It-m3 whichare adapted to enter vthe notches |2-|2 in the relay base plate II.Slidably mounted on the plates Ili-|1 for longitudinal movement areclamp plates I|39-IB9 (Fig. 3) which are adapted at inner ends to beengaged with the upper surfaces of the notched ends of the relay baseplate I i. t is to be understood that the relay locating pins IGS-408 donot extend quite up to the upper surface of the relay base plate I I.Each of the clamp plates I S-IlS is slotted, as indicated at H0, at itsinner end and is forked at its outer end-as indicated at I I I. A headedpin |52 exten-ds through lthe slot II and is threaded into the base 5|.A compression spring H5 surrounding the pin H2 and bearing at oppositeends against the under surface of the clamp plate |09 and the uppersurface of the plate Il, normally urges the clamp plate upwardly abovethe plane of the upper surface of the relay base plate il. Pivoted at I6to .each clamp plate |69 at its forked outer end is a lever lill' havinga cam formation IIB, which bears against the vupper surface of 4theplate |07 when- 'the right hand lever is rocked counterclockwise, Fig.3, thus lowering the inner end thereof into clamping rela-tion with therelay base plate II. The slot III) in the clamp plate |08 permits the'clamp plate to sli-de over the relay -rbase plate II and to beretracted therefrom preceding lthe clamping -of the relay I0 on "thefixture lby the cam levers -I I 'I-I IIl and following the movement of'the -ca-In lever to its inoperative position. In their youtermostlongitudinal positions, the clamp plates |09-|99 do not interfere withthe mounting of the relay AI'Il on the xture.

Attached to the under surface -of the plate 90 `and extending from itsleft -end Eig. 5, 'is an .L- shaped bracket H9 vand projecting from itslefthand `surface lis a pi-n 12d. The bracket IIQS and the lprojecting-pin |28 are so arranged .that 'when the armature actuated lever 3:'6 isassembled on the relay sub-assemblage, to be described hereinafter, thepin ki265 will be received lin 4the offset lower slotted end 3l of thelever 36, dotted -outline Fig. 2, which serves to position and 'hold therelay lever 36 in substantially its nor-mal position during itsAassembly with the -other referred Ito relay partsyas previouslymentioned, on the relay sub-assemblage.

Pivotally mounted on the -iiX-ture at its left :side on a verticalaxis,-as shown at I2i| (Figs. l, 2 and 5), is an arm |22 to one end ofwhich 'is-clamped at 23 a dial lindicator 126. The arrangement is suchthat an actuator |27 of 4the dial indicator -will engage a vertical edge`face of the .armature '-25 lat its left end, dotted outline Fig. "2,when .the arm |122 is swung about -its pivot I 21| toits operativeposition (Fig. '2) land 4lorked insuch position by rotating a hand screw|28 to clampsplit' arms |29 -of Vthe arm |22 ito its ipivot memberfI2-I. One of the :split arms Illill) "is arranged to .engage an-adjustably mounted stop member |30 when the dial indicator v|25 fisswung Ito yits operative position as shown .in v"the drawings.

In using the "described fixtures :and assuming that the pivotal yokeshaped member 96 having the spaced wedge faces 9.9-29'9 and 'the pivotalcam lever I BI carried thereby are in .their :retracted or inoperativepositions, Aas `shown in Vbroken outline in Fig. "5,'-and thatthehandllever *I4 has been retracted to its full line position `(f-ligs.1 and 2), and consequently, the armature adjusting lingers 55 and 55 arein 'their .inoperative positions. Also that the clam-p plates-I'llf9-|09 are in their outer released positions on the platesIWI-Iii?, and valso that the dial -indicator |26 vhas been swungclockwise labout vits pivot member -I2I to its inoperative positiontFig. l), the fixture is operated inftheffollowing'manner.

With the various-foperating'parts of the fixture positioned asabovedescribed, a sub-assemblage of a relay I0, which is to .havel'thelparts lprevi- -fously referred to Vaccurately assembled thereonand certain of the y'parts adjusted, is Vplacedupon the fixture with thenotched relayibase pla-te II (Fig. 3) associated with the locating pinsIUS- |08 projecting 7from the fixture plates I0'I`Hl1. As -thuspositioned fthe relay sub-assemblage is transversely located on ytheiixture by thecooperating fixture-pins Hi8-|08 entered inthe notchesI2-I-2 ofthe relaybase plate II.

Thereafterthe l pivotal yoke-shaped member z is rockedcounterclockwise--(Fig. 5) 'to engage the 'wedge faces `S9-59 with thesloping Iside "faces 23-123 Aof lthe armature "pole pieces AZI`2I'(IFig. y3) `whereupon, the pivotal '-carnflever IIlI -is flikea 'wiserockedcounterclockwise to engage its inclined surface |04 with the fixedpin |03 which serves to draw down the wedge faces E39- 99 along thesloping faces 23-23 of the relay pole pieces 2 |2 which serves toaccurately longitudinally center the relay sub-assemblage upon theassembling fixture. After thus longitudinally locating the relaysub-assemblage, the relay clamp plates IDS- |09 are slid toward eachother to position their inner opposed ends over the notched ends of therelay base plate This is effected by grasping and using the hand levers||1| |1 to slide the plates IDS- |09 into position, and thereafterrocking the levers (Fig. 3) in the manner previously described to causethe plate |||9||1S|y to firmly clamp the relay sub-assemblage to thefixture as shown in the drawings. Following the clamping of the relaysub-assemblage in position, the cam lever is released, and together withthe yoke-shaped member 96 rocked back to their inoperative positions(Figs. l and The relay parts, namely, the armature attached to itssupporting channel shaped member 21 by the screws 2'6-26, armatureactuated lever 36 and armature restoring levers 45--45 are now assembledand pivotally mounted on the frame 32 of the relay sub-assemblage bymeans of the front and rear pivot screws and 3|, and the latter screwstightened to eliminate any play of the armature assemblage on the pivotscrews, and to maintain the armature assemblage in a substantiallyhorizontal plane. 'l'n mounting the relay lever 36 in position, thefixture pin |20 is entered in the offset lower slotted end of the leverfor the purpose previously referred to. The screws 26-26, which passthrough the slots 28-25 in the channel member 21, are now loosened sothat the armature 25 may now be slightly longitudinally adjusted on themember 21, and thus position its sloping end faces 24-24 relative to thesloping side faces 23-23 of the relay pole pieces 2|-2| to provide equaland definite air gaps therebetween. To thus position the armatureassemblage, the hand lever 14 is rocked from its full line position toits broken outline position (Fig. 2), and locked in such position aspreviously described. This movement of the lever 14 serves to advancethe armature adjusting fingers and 55 equal distances, and thuslongitudinally positioning the armature 25 on its longitudinally fixedsupporting member 21 as previously described to provide the desired airgaps between the ends of the armature and the relay pole pieces.Following this actuation of the lever 14, the screws 26-26 are tightenedto hold the armature 25 to the member 21 in its adjusted position.

Following this adjustment of the armature 25, the lever 14 is unlockedand rocked back to its inoperative full line position (Figs. l and 2),and the dial indicator |26 is now swung about its pivot |2| to carry itsactuator |21 into engagement with the vertical edge face of the armature25 at its left end as indicated fragmentarily in broken outline in Figs.2 and 6 and clamped in such position. Thereafter, the rear pivot screw3|, previously tightened, together with the front pivot screw 3|! isadjusted outwardly while transversely wobbling the armature assemblageuntil it has a slight play within prescribed limits, as indicated on thedial indicator |25, between its pivot screws. This is followed bylocking the front pivot screw 30 in position by means of the lock nut43, and the assembling and adjusting operations on the relay in thepresent completed.

To remove the thus assembled and adjusted relay |0 from the xture, theoperations described hereinbefore in mounting the relay subassemblage onthe fixture, are simply reversed.

It is to be understood that the above-described arrangements are simplyillustrative of the application of the principles of the invention.Numerous other arrangements may be readily devised by those skilled inthe art which will embody the principles of the invention and fallwithin the spirit and scope thereof.

What is claimed is:

l. A relay assembling and adjusting fixture for use in positioning arelay armature on a support relative to faces of spaced coil cores andholding said armature in that position while it is fixed to said supportwhich is pivotally mounted intermediate said core faces comprising abase member, means on said base for supporting slidably a relay havingspaced coil cores, a plate pivotally mounted on said base member andcarrying two sloping faces, the surfaces of said faces being disposed inplanes corresponding to the planes which the core faces will occupy whencentrally positioned in the xture, a pin fixed to said base, a cam levercarried by the pivotal plate for engagement with said pin to force thesloping faces on said pivotal plate into tight engagement with the corefaces upon manipulation of the cam lever when the plate is in a positionsubstantially parallel with the ends of the cores thereby to locate therelay assemblage in the fixture preparatory to the assembling therewithof other parts of the relay, and means for clamping the relay assemblageto said base member to hold the relay assemblage in its located positionafter movement of said plate to an unoperative position.

2. A relay assembling and adjusting fixture for use in positioning arelay armature on a support relative to sloping faces of spaced coilcores of a relay and holding said armature in that position while it isfixed to said support which is pivotally mounted intermediate said corefaces comprising a base member, means on said base member for supportingsuch a relay slidably relative to the base, a plate pivotally mounted onsaid base member and carrying two cam faces, the surfaces of said facesbeing disposed in planes corresponding to the planes which the corefaces will occupy when centrally positioned in the fixture, a pin fixedto said base, a cam lever carried by the pivotal plate for engagementwith said pin to force the cam faces on said pivotal plate into tightengagement with the core faces upon manipulation of the cam lever whenthe plate is in a position substantially parallel with the ends of thecores thereby to locate the relay assemblage in the fixture preparatoryto the assembling therewith of other parts of the relay, means forclamping the relay against movement relative to the base when it hasbeen so located, a cam slide slidably mounted on said base, means foractuating said cam slide, a pair of oppositely disposed and oppositelyshaped cooperating cams carried by the cam slide, and a pair ofdiametrically opposed camming members adapted to be actuated by saidcams for centralizing an armature with respect to the fixture and thuscentralizing the armature with respect to said core faces of the relaywhich has been centralized on the fixture.

3. A relay assembling and adjusting fixture for fixture are use inpositioning a relay armature on a support relative to faces of spacedcoil cores of a relay assemblage and holding said armature in thatposition while it is Xed to said support which is pivotally mountedintermediate said core faces comprising a base member, means on saidbase member for movably supporting the relay assemblage, a platepivotally mounted on said base member and carrying two cam faces, thesurfaces of said faces being disposed in planes corresponding to theplanes which the core faces will occupy when centrally positioned in thefixture, a pin fixed to said base, a cam lever carried by the pivotalplate for engagement with said pin to force the cam faces on saidpivotal plate into tight engagement with the core faces uponmanipulation of the cam lever when the plate is in a positionsubstantially parallel with the ends of the cores thereby to locate therelay assemblage in the fixture preparatory to the assembling therewithof other part-s of the relay, means for clamping the relay assemblage tothe supporting means after it has been so located, a cam slide slidablymounted on said base, a pivotal lever for actuating said cam slide,means operated by the cam slide for centralizing said armature withrespect to the fixture and thus with said core faces, means for lockingsaid cam slide actuating lever in its actuated position comprising ahandle threaded into said lever, and a tapered arcuately shaped memberupon one surface of which said lever rides and having a second surfaceagainst which said handle may be locked by threading the handle in onedirection into said lever.

4. A relay assembling and adjusting fixture for positioning a relayarmature on a support relative to opposed faces of two spaced coil coresassociated with the armature to provide similar air gaps betweenopposite faces of the armature and the core faces comprising means forsupporting the cores movably, wedging means movable relative to thesupporting means to engage said core faces and move the cores, movablemeans mounted on said wedging means cooperating with a fixed element forforcing the wedging means to a position effective to shift said cores onsaid supporting means to centralize the cores with respect to saidwedging means, means for clamping the cores in said centralized positionon said supporting means, a pair of opposed fingers slidable relative tothe supporting means adapted to engage said opposite armature faces andshift said armature upon its support to provide said air gaps incooperation with said core faces after the cores have been centralizedand said wedging means withdrawn, said fingers having camming surfaces,a pair of camming means movable relative to the supporting means in Cill0 unison at an angle to the movement of said fingers and engaging saidfinger camming surfaces for actuating said fingers, and means foractuating said camming means.

5. A relay assembling and adjusting fixture for positioning a relayarmature on a support relative to opposed faces of two spaced coil coresassociated with the armature to provide similar air gaps betweenopposite faces of the armature and the core faces comprising means forsupporting a relay assemblage including the cores, wedging means movablerelative to the supporting means to simultaneously engage said corefaces, means for forcing the wedging means to a position effecsaid relaycores on said supporting means to centralize the cores with respect tosaid wedging means, means for clamping the cores in said centralizedposition on said supporting means, a pair of slidably mounted fingerscentralized relative to said wedging means adapted to engage saidopposite armature faces and shift said armature upon its support toprovide said air gaps in cooperation with said core faces after thecores have been centralized and said wedging means withdrawn, saidlingers having camming surfaces, and means for actuating said fingers.

S. A relay assembling and adjusting fixture for positioning a relayarmature on a support relative to opposed faces of two spaced Coil coresassociated with the armature to provide similar air gaps betweenopposite faces of the armature and the core faces comprising means forsupporting the cores, wedging means mounted pivotally relative to thesupporting means for engaging said core faces to centralize the coreswith respect to said wedging means, means for clamping the cores in saidcentralized position on said supporting means, a pair of slidablymounted fingers adapted to engage said opposite armature faces and shiftsaid armature upon its support to provide said air gaps in cooperationwith said core faces after the cores have been centralized and saidwedgng means withdrawn, said fingers having camming surfaces, and a yokeshaped slidable member having camming surfaces on spaced arms thereofmounted for moving said fingers toward one another.

References Cited in the le of this patent

